Mechanical stoker.



W. T. HANNA. MECHANICAL STOKER. APPLICATION FILED OCT. 2s. 19!!- m n e M P M M \U. M 6 3 A 0 0 9M 1 a. Wt'inass I Inventor c/lfiorney UNITED STATES PATENT OFFICE.

WILLIAM T. HANNA, OF CINCINNATI, OHIO, ASSIGNOR, IBY MESNE ASSIGNMENTS, TO

THE MECHANICAL CONSTRUCTION COMPANY, OF CINCINNATI, OHIO, A CORPORA- TION OF OHIO.

MECHANICAL STOKER.

Specification of Letters Patent.

Patented Oct. 3, 1916.

Application filed October 28, 1911. Serial No. 657,251.

and useful Improvements in Mechanical Stokers, of which the following is a specification.

My invention relates more particularly to fuel distributing plates for such stokers and p to-means of positioning the same.

To secure the best results it is essential that the distribution of fuel in the fire box shall be such as to supply to each part of the fire box the maximum amount of fuel which may be completely consumed, and that amount only. The fuel is ordinarily fed through a single opening upon a plate or table from which it is propelled, generally by a blast, into the fire box.

In order to insure delivery of fuel to the sides, a portion must be directed laterally and, in order to secure delivery to the rear corners, the distributing plate must extend into the fire box so.that the fuel may escape the' side walls of the fuel opening. The

result is that too large a proportion of the fuel goes to the center and front of the fire box and too small a portion to the rear, there being an area of non-supply beneath the distributing plate or table. The ordinary method of compensating for this defect is by means of 'the shovel or rake which-involves cutting off the automatic feed, dis connecting the feed mechanism and opening the fuelopening, thereby admitting cold air.

The object of my invention is to provide simple and effective means whereby the rear of the fire box may be fed mechanically without disconnection of the feed mechanism or opening the feed door, and whereby this feed may be controlled'by the operator.

,My invention consists in the parts and combination and arrangement of parts hereinafter described and claimed.

I have illustrated my invention as applied to a blast-feed locomotive stoker.

In the drawings, Figure l, is a vertical section through the back of the fire box of a locomotiveengine showing my invention applied to the same but showing some of the parts in elevation; Fig. 2, a plan view showing-thedistributin plate in the rearward position; Fig. 3, a 11 e .view showing the distributing plate in .its forward position, and Fig. 4, a section on line A-B of Fig. 1.

The reference numeral 1 denotes the boiler back of a locomotive engine, 2 the-fuel openlng, a chute adapted to deliver fuel to the dlstrlbuting mechanism, 4: a ridge shaped plate to deflect the fuel, 5 a blast casing havmg divergent nipples, 6, adapted to direct blasts of air or other fluids against the fuel and impel it into the fire box, 7 a distributing plate mounted beneath the blast casing and movable longitudinally relatively thereto, 8 a link connecting the distributing plate with an angle lever, 9, fulcrumed at 10 on the stoker frame 11.

prefer to provide the distributing plate, in its upper face, with divergent. side channels 12 so arranged as to direct the fuel received therein approximately at right angles to the longitudinal axis of the fire box in order that fuel may be fed into the rear corners. the base of the plate ma be provided with a tenon 13 adapted to sli e in a groove 14 in the upper face of a supporting member 7 .By actuating the lever 9, the distributing plate may bewithdrawn to partly or wholly cut off the feed of fuel into the side channels, and to permit fuel to drop nearly or directly beneath the fuel door, or it may be advancedto allow fuel to be fed to the other parts ofthe fire box, thereby enabling the operator to regulate at will the distribution of fuel. A

I claim as my invention:

'1. In a mechanical stoker, the combination with a distributing plate provided with channels constructed and adapted to direct For guiding the distributing plate,

the fuel to the side of the fire box, means for feeding fuel to and over-said distributing plate, means for projecting the fuel therefrom and means for adjusting the position of the distributing plate with respect to said fuel projecting means whereby the feed of fuel over the plate and through said side channels may be varied by changing the relative position of said fuel projecting means and said channels.

2. In a mechanical stoker, the combination with a distributing plate provided with channels adapted to direct. the fuel into the fire box in direct line and at right angles to the side walls, a plurality of fluid jets constructed and arranged to distribute fuel from 7 said plate and for projecting the fuel from may be varied to vary the distribution of the the plate1 into the fire b0)? said jelts ang plate fuel in the fire box.

eing re ative y adjusta le so t at t e distribution of the fuel from the plate by the WILLIAM HANNA 5 jets may be varied and the effect of the blast Witnesses from the jets in projecting the fuel from FANNIE E. KNIGHT, the plate and through the channels thereof GEO. .B. PARKINSON. 

